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Trane/American Standard BAYFRAME210A Frame Kit With Filter (AKA FRM01431)

This kit includes plastic frame and 1 BAYFTFREXM expandable accordian filter.  Once assembled - it is identical in size to the BAYFTFR21M 5" Box Filter. 

FEATURES:

•  21" X 27" X 5" nominal size 
• 20.7" x 26.2" x 5" actual size
• Fits Air Cleaner model TFM210A0FR0
• Replacement filter media is less expensive to buy and ship than 5" box filters